Kiln-heating apparatus.



w/TNESS si PATENTBD DEG. 11, 1906.

s., o. LARKINS.

KILN HEATING APPARATUS. APPLICATION FILED MAR. ao, 190e.

Arma/vers SAMUEL O. LARKINS, OF ROLAND PARK, MARYLAND.

KlLN-HEATING APPARATUS.

Specification of Letters Patent.

Patented Dec. 1 1, 190e.

Application filed March 30, 1906. Serial No. 308,864.

To all whom it may concern.-

Be it known that I, SAMUEL O. LARxrNs, a citizen of the United States,and a resident of Roland Park, in the county of Baltimore and State ofMaryland, have invented a new and Improved Kiln-Heating Apparatus, ofwhich the following is a specification.

My invention has to do with heating apparatus employed in lumber kilnsor houses, and has for its object peculiar, novel, and improvedapparatus of the character stated using steam as the heating medium.

The invention consists of the special construction shown by theaccompanying drawings and hereinafter fully described, the features ofnovelty being pointed out in the ap ended claims.

An the drawings, Figure 1 is a detail view of my kiln-heating apparatus,the same being shown in side elevation. Fig. 2 is a verticallongitudinal sectional vienT through the heating-apparatus header. Fig.3 is aside elevation of the header viewed from its radiatingpipe side,and Fig. 4 is a similar view of the header'viewed from its other side.Fig. 5 is a transverse vertical sectional view through the header, takenon line 5 5 of Fig. 2.

My improved heating apparatus is designed for arrangement in kilns orhouses adapted for the reception of cars loaded with lumber to be dried.Kilns or houses of the general character stated are Well understood, andneed not, therefore, be further referred to for a full understanding ofmy invention.

In the practice of my invention 'I employ a header 1, into which steamis conveyed, as will appear further on.

2 and 3 designate, respectively, upper and lower series of pipes orreturncirculation radiating-tubes extending from the header 1, the sameconsisting of pipes 2a and 3b in the respective series, connected attheir far ends from the header 1 by couplings 4, substantially as shownby Fig. 1. The several series of radiating-tubes 2 3 are arranged at anupward inclination from their connection with the header 1 and arecprovided with any suitable support 5 at their coupled end 4, as will beunderstood upon reference to Fig. l of my drawings.

Referring now to Fig. 2, it will be noticed that the header 1 isconstructed with a serpentine transverse partition-Wall 6, dividing theinterior of the header into chambers 7 8, made communicating through apassage-Way 9, and like chambers 10 11 made communieating through apassage-way 12. 13 denotes a pipe adapted to lead into the passageway12, and 14 denotes a similar pipe adapted to lead into the passage-Way9. The pipes 13 14 are provided with cut-off valves 15 16 and madecommunicating with a common supply-pipe 17. The latter pipe is designedto extend to any suitable steamgenerator, obvious and not necessary toillustrate, and is provided with a cut-off valve 17a.

According to my invention the up er pipe 2il in each loop of the series2 thereo is made communicating with the header-chamber 7, and the lowerpipe 2aL is made communicating with the header-chamber 10. The upper andlower pipes 3b of the series of loops 3 are arranged communicating withthe respective header chambers 8 11, substantially as the pipes 2acommunicate with the chambers 7 10.

It will be noticed (see Fig. 4) that the portions 18 of thepartition-wall 6 extending longitudinally of the header are madeinclining to common openings 19 through one vertical side of the header.

2O denotes a drain-pipe leading from the opening 19 in the chamber 8,and 21 a similar pipe leading from the opening 19 in the chamber 11.

22 denotes a branch pipe extending from the pipe 20 and leading into thechamber 7 through its opening 19, and 23 a similar pipe extending fromthe pipe 21 and leading into the chamber 10 through its opening 19. Itis designed to extend the pipes 20 21 to any suitable hot-Wells orcondensers 24 and provide them with cut-off valves 25 26, as shown byFig. 3.

The construction of my improved heating apparatus Will be understoodfrom the above description and its use rendered apparent by thefollowing statement. In the use of my heating apparatus the valves 25and 26 are closed, and the valve 17a in the steam-supply pipe 17 isopened. Now it is apparent that unless air contained in theheader-chambers 7, 8, 10, and 11 and the series of radiating-loops 2 3is exhausted best results are ICO royl

not likely to be had from all portions of the heating apparatus, owingto imperfect circulation of the steam, due to formation of airtraps, allas well understood.

In the use of my improved heating apparatus all the valves should beclosed when starting operation. Upon opening the valve IIO 17 a, 15, and16 steam is free to low through the pipe 14 into the chambers '7 and 8,and it is also free to flow simultaneously through the pipe 13 into thechambers 10 and 11.

5 Steam in said chambers obviously is free to flow therefrom to therespective drain-pipes 20, 21, 22, and 23. In order that the wholeapparatus shall be free to be filled with highpressure steam, lthevalves 25 and 26 are lo opened as occasion requires to drain off waterof condensation and any air that may-be `trapped in the severalheader-chambers.

My heating apparatus is peculiar and novel in that the series ofradiating-loops 2 3 are arranged adapted for complete drainage of allcondensation-water, and by reason of their peculiar pipe connections 2aand 3h with the respective steam-chambers 7 8 and 10 11 of theheader lwhen steam is turned zo on through the pipe 17 the whole heatingapparatus will be lled with high-pressure steam, substantially as in thedome of a steam-boiler. i

I claim- 1. A heating apparatus comprising a header constructed withinner division-walls forming separated series of vertically-arrangedcommunicating chambers, the chambers of one series being located betweensimi- 3o lar chambers of a separate series, drain-pipes with cut-ofi?valves leadingfrom the several chambers in the header, steam-conveyingpipes leading into the respective series of header-chambers, cut-offvalves in said steamconveying pipes, and heater-pipes providingcommunication for a chamber in one series thereof into a lower chamberof a separate series of chambers, the heater-pipes being arrangedupwardly inclining from their connection with the header.

2. A heating apparatus comprising a header constructed with innerdivision-walls forming separated series of vertically-arrangedcommunicating chambers, the chambers of one series ,being locatedbetween similar chambers of a separate series, drain-pipes with cut-0Evalves leading Jfrom the several chambers in the header, the chambersbeing constructed with inner bottoms, made downwardly inclining tocentrally-located discharge-openings, providing passage-ways into thedrain-pipes, steam-conveying pipes leading into the respective series ofheader-chambers, cut-olf valves in said steam-conveying pipes, andheater-pipes providing open communication from a chamber inone seriesthereof to a lower chamber in a separate series oi" chambers, theheater-pipes being arranged upwardly inclining from their connectionwith the header.

SAMUEL O. LARKINS. Witnesses:

A. MCD. BURGrEss,l B, C. MALLARD.

